The main article is Cromemco.
“The Z2 system was an evolution of the Z1 model. Major change was a new CPU board using a 4 Mhz...Cromemco Z-2
“CDOS is the update to Cromemco RDOS. This list of commands is taken from the Manual for CDOS...Cromemco CDOS
“The System 0 was one of the last and lowest cost system from Cromemco. The basic unit was a...Cromemco System Zero